Automatic flush toilets that flush while you are still on them.
I'm also a bit afraid of what all the suction power is going to do. One of my biggest fears is that a snake will bite me in the butt one day while on the toilet. (Yes yes I would've made a HORRIBLE pioneer, I know). The pre-emptive auto flush taps into all those fears.
And not only do I feel rushed and paranoid, but also a little, well, unnecessarily cleansed.
I'm all for the european bidet (or even a well timed ABW), but come ON.